verb (used with object)
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to communicate with (a person) or search for information about (a person) by using Facebook.
My old girlfriend just facebooked me.
His future employer Facebooked him and decided to withdraw the job offer.
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to post on Facebook.
I facebooked some photos of my cat.
You should Facebook the event so more people will show up.
verb (used without object)
noun
verb
Spelling
The official trademarked name of the social media platform and website is now styled in all capital letters “FACEBOOK,” though prior to 2020 the trademarked style was “facebook,” in all lowercase letters. Formal writing—as exemplified by most news and book publishers—treats such names as regular proper nouns, in this case “Facebook,” using an initial capital letter, but not all caps. However, when a trade name begins with a lowercase letter followed by an uppercase one, such as eBay or iPad, this spelling is retained, even at the beginning of a sentence.
Etymology
Origin of Facebook
First recorded in 2000–05; from facebook, a college student directory with personal photos and basic information
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Meta Platforms was up 7% after the Facebook and Instagram parent announced a new large language model called Muse Spark.
From Barron's • Apr. 8, 2026
Baker and Sharp share tips in a Facebook messenger group with a few dozen other leaders.
From The Wall Street Journal • Apr. 8, 2026
Jurors concluded that Meta, which owns Instagram, Facebook and WhatsApp, and Google, the parent company of YouTube, had intentionally built addictive social media platforms that harmed her mental health.
From BBC • Apr. 8, 2026
“At this time, we can confirm that no local law enforcement was involved in the incident,” the department posted on Facebook.
From Los Angeles Times • Apr. 7, 2026
“I don’t know. Facebook, I guess, but I don’t know if Olga even used it. I’m telling you, she was an old lady trapped in a twenty-two-year-old’s body.”
From "I Am Not Your Perfect Mexican Daughter" by Erika L. Sánchez
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
